EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L Transformer:PT61017PEL TR? U 1 1 612CBC1A P 5050 4800 F 0 "TR?" H 5050 4258 50 0000 C CNN F 1 "HX1188FNL" H 5050 4349 50 0000 C CNN F 2 "Transformer_SMD:Transformer_Ethernet_Bourns_PT61017PEL" H 5050 4300 50 0001 C CNN F 3 "https://www.bourns.com/docs/Product-Datasheets/PT61017PEL.pdf" H 4350 5150 50 0001 C CNN 1 5050 4800 1 0 0 1 $EndComp $Comp L Connector:RJ45_LED_Shielded J? U 1 1 612DF83D P 3200 4800 F 0 "J?" H 3200 5375 50 0000 C CNN F 1 "RJ45" H 3200 5466 50 0000 C CNN F 2 "" V 3200 4825 50 0001 C CNN F 3 "~" V 3200 4825 50 0001 C CNN 1 3200 4800 1 0 0 1 $EndComp Wire Wire Line 3600 4500 4650 4500 Wire Wire Line 3600 4600 4000 4600 Wire Wire Line 4000 4600 4000 4700 Wire Wire Line 4000 4700 4650 4700 Wire Wire Line 3600 4700 3950 4700 Wire Wire Line 3950 4700 3950 4900 Wire Wire Line 3950 4900 4650 4900 Wire Wire Line 3600 5000 3950 5000 Wire Wire Line 3950 5000 3950 5100 Wire Wire Line 3950 5100 4650 5100 Wire Wire Line 3600 4800 3700 4800 Wire Wire Line 3700 4800 3700 4850 Wire Wire Line 3700 4900 3600 4900 Wire Wire Line 3600 5100 3700 5100 Wire Wire Line 3700 5100 3700 5150 Wire Wire Line 3700 5200 3600 5200 Wire Wire Line 3700 4850 3900 4850 Wire Wire Line 3900 4850 3900 5400 Connection ~ 3700 4850 Wire Wire Line 3700 4850 3700 4900 Wire Wire Line 3700 5150 3800 5150 Wire Wire Line 3800 5150 3800 5500 Connection ~ 3700 5150 Wire Wire Line 3700 5150 3700 5200 Text Label 4050 5000 0 50 ~ 0 ISO_CENTER_RX Text Label 4600 5400 2 50 ~ 0 SPARE_A Wire Wire Line 3900 5400 4600 5400 Wire Wire Line 3800 5500 4600 5500 Text Label 4600 5500 2 50 ~ 0 SPARE_B Wire Wire Line 4650 4600 4050 4600 Text Label 4050 4600 0 50 ~ 0 ISO_CENTER_TX Text Label 5800 5100 2 50 ~ 0 RX_N Text Label 5800 4900 2 50 ~ 0 RX_P Text Label 5800 4500 2 50 ~ 0 TX_P Text Label 5800 4700 2 50 ~ 0 TX_N Text Label 6950 5000 2 50 ~ 0 VREF $Comp L Device:R R? U 1 1 6138B816 P 6450 4900 F 0 "R?" V 6400 5050 50 0000 C CNN F 1 "47" V 6450 4900 50 0000 C CNN F 2 "" V 6380 4900 50 0001 C CNN F 3 "~" H 6450 4900 50 0001 C CNN 1 6450 4900 0 1 1 0 $EndComp $Comp L Device:R R? U 1 1 6138B3D3 P 6050 4900 F 0 "R?" V 6000 5050 50 0000 C CNN F 1 "150" V 6050 4900 50 0000 C CNN F 2 "" V 5980 4900 50 0001 C CNN F 3 "~" H 6050 4900 50 0001 C CNN 1 6050 4900 0 1 1 0 $EndComp Wire Wire Line 5450 4700 5800 4700 Wire Wire Line 5450 4900 5900 4900 Wire Wire Line 6200 4900 6250 4900 Wire Wire Line 6600 4900 6700 4900 Wire Wire Line 6700 5000 6700 4900 Wire Wire Line 5450 5000 6700 5000 Wire Wire Line 6950 5000 6700 5000 Connection ~ 6700 5000 Wire Wire Line 6250 4900 6250 4700 Wire Wire Line 6250 4700 6950 4700 Connection ~ 6250 4900 Wire Wire Line 6250 4900 6300 4900 $Comp L Device:R R? U 1 1 613DE5E8 P 6450 5100 F 0 "R?" V 6500 5250 50 0000 C CNN F 1 "47" V 6450 5100 50 0000 C CNN F 2 "" V 6380 5100 50 0001 C CNN F 3 "~" H 6450 5100 50 0001 C CNN 1 6450 5100 0 1 -1 0 $EndComp $Comp L Device:R R? U 1 1 613DE71E P 6050 5100 F 0 "R?" V 6100 5250 50 0000 C CNN F 1 "150" V 6050 5100 50 0000 C CNN F 2 "" V 5980 5100 50 0001 C CNN F 3 "~" H 6050 5100 50 0001 C CNN 1 6050 5100 0 1 -1 0 $EndComp Wire Wire Line 6200 5100 6250 5100 Wire Wire Line 6600 5100 6700 5100 Wire Wire Line 6700 5000 6700 5100 Wire Wire Line 6250 5100 6250 5300 Connection ~ 6250 5100 Wire Wire Line 6250 5100 6300 5100 Wire Wire Line 5450 5100 5900 5100 Wire Wire Line 6250 5300 6950 5300 $Comp L Device:R R? U 1 1 613EAEA9 P 6250 5550 F 0 "R?" H 6180 5504 50 0000 R CNN F 1 "10k" H 6180 5595 50 0000 R CNN F 2 "" V 6180 5550 50 0001 C CNN F 3 "~" H 6250 5550 50 0001 C CNN 1 6250 5550 1 0 0 1 $EndComp Wire Wire Line 6250 5400 6250 5300 Connection ~ 6250 5300 Wire Wire Line 6250 5700 6250 5800 $Comp L power:GND #PWR? U 1 1 613EFD79 P 6250 5800 F 0 "#PWR?" H 6250 5550 50 0001 C CNN F 1 "GND" H 6255 5627 50 0000 C CNN F 2 "" H 6250 5800 50 0001 C CNN F 3 "" H 6250 5800 50 0001 C CNN 1 6250 5800 1 0 0 -1 $EndComp Wire Wire Line 5450 4500 5800 4500 Text Notes 6300 5600 0 50 ~ 0 TODO: check whether adding\nthis resistor to _N is OK. Text Label 6950 4700 2 50 ~ 0 LV_RX_P Text Label 6950 5300 2 50 ~ 0 LV_RX_N Text Label 4050 4500 0 50 ~ 0 ISO_TX_P Text Label 4050 4700 0 50 ~ 0 ISO_TX_N Text Label 4050 4900 0 50 ~ 0 ISO_RX_P Text Label 4050 5100 0 50 ~ 0 ISO_RX_N Wire Wire Line 4050 5000 4650 5000 $Comp L Device:R R? U 1 1 61726B86 P 2750 5400 F 0 "R?" H 2820 5446 50 0000 L CNN F 1 "470" H 2820 5355 50 0000 L CNN F 2 "" V 2680 5400 50 0001 C CNN F 3 "~" H 2750 5400 50 0001 C CNN 1 2750 5400 1 0 0 -1 $EndComp Text Label 2200 4500 0 50 ~ 0 LED_GREEN Wire Wire Line 2200 4500 2800 4500 Text Label 2200 5100 0 50 ~ 0 LED_RED Wire Wire Line 2200 5100 2800 5100 $Comp L Device:R R? U 1 1 6175C20B P 2550 5400 F 0 "R?" H 2350 5450 50 0000 L CNN F 1 "470" H 2350 5350 50 0000 L CNN F 2 "" V 2480 5400 50 0001 C CNN F 3 "~" H 2550 5400 50 0001 C CNN 1 2550 5400 1 0 0 -1 $EndComp Wire Wire Line 2750 5250 2750 5200 Wire Wire Line 2750 5200 2800 5200 Wire Wire Line 2550 5250 2550 4600 Wire Wire Line 2550 4600 2800 4600 Wire Wire Line 2550 5550 2550 5650 Wire Wire Line 2550 5650 2650 5650 Wire Wire Line 2750 5650 2750 5550 Wire Wire Line 2650 5650 2650 5750 Connection ~ 2650 5650 Wire Wire Line 2650 5650 2750 5650 $Comp L power:GND #PWR? U 1 1 61788117 P 2650 5750 F 0 "#PWR?" H 2650 5500 50 0001 C CNN F 1 "GND" H 2655 5577 50 0000 C CNN F 2 "" H 2650 5750 50 0001 C CNN F 3 "" H 2650 5750 50 0001 C CNN 1 2650 5750 1 0 0 -1 $EndComp NoConn ~ 3200 4300 Text Label 1850 5050 2 50 ~ 0 VREF $Comp L power:GND #PWR? U 1 1 61314799 P 1350 5500 F 0 "#PWR?" H 1350 5250 50 0001 C CNN F 1 "GND" H 1355 5327 50 0000 C CNN F 2 "" H 1350 5500 50 0001 C CNN F 3 "" H 1350 5500 50 0001 C CNN 1 1350 5500 1 0 0 -1 $EndComp Wire Wire Line 1350 5400 1350 5450 Wire Wire Line 1350 4600 1350 4700 $Comp L power:VCC #PWR? U 1 1 6131161A P 1350 4600 F 0 "#PWR?" H 1350 4450 50 0001 C CNN F 1 "VCC" H 1365 4773 50 0000 C CNN F 2 "" H 1350 4600 50 0001 C CNN F 3 "" H 1350 4600 50 0001 C CNN 1 1350 4600 1 0 0 -1 $EndComp Wire Wire Line 1350 5050 1350 5000 Connection ~ 1350 5050 Wire Wire Line 1350 5050 1850 5050 Wire Wire Line 1350 5100 1350 5050 $Comp L Device:R R? U 1 1 61308B80 P 1350 5250 F 0 "R?" H 1420 5296 50 0000 L CNN F 1 "1k" H 1420 5205 50 0000 L CNN F 2 "" V 1280 5250 50 0001 C CNN F 3 "~" H 1350 5250 50 0001 C CNN 1 1350 5250 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 61307B62 P 1350 4850 F 0 "R?" H 1420 4896 50 0000 L CNN F 1 "1k" H 1420 4805 50 0000 L CNN F 2 "" V 1280 4850 50 0001 C CNN F 3 "~" H 1350 4850 50 0001 C CNN 1 1350 4850 1 0 0 -1 $EndComp Wire Wire Line 2150 1850 2750 1850 Wire Wire Line 4800 2400 5100 2400 Wire Wire Line 4800 1950 4800 2400 Wire Wire Line 4800 1550 4800 1650 Wire Wire Line 4800 1100 5600 1100 Connection ~ 4800 1100 Wire Wire Line 4800 1250 4800 1100 Wire Wire Line 4350 2650 5400 2650 Connection ~ 4350 2650 Connection ~ 5400 2650 $Comp L Device:D_Zener D? U 1 1 612F1C42 P 4800 1400 F 0 "D?" V 4754 1480 50 0000 L CNN F 1 "22V" V 4845 1480 50 0000 L CNN F 2 "" H 4800 1400 50 0001 C CNN F 3 "~" H 4800 1400 50 0001 C CNN 1 4800 1400 0 1 1 0 $EndComp $Comp L Device:Q_NPN_BEC Q? U 1 1 612D816A P 6000 2000 F 0 "Q?" H 6200 2050 50 0000 L CNN F 1 "BC816B" H 6200 1950 50 0000 L CNN F 2 "" H 6200 2100 50 0001 C CNN F 3 "~" H 6000 2000 50 0001 C CNN 1 6000 2000 1 0 0 -1 $EndComp Text Notes 5150 1850 0 50 ~ 0 ! 150mW Wire Notes Line 5115 1855 5215 1855 Wire Notes Line 5215 1855 5165 1755 Wire Notes Line 5165 1755 5115 1855 $Comp L power:+5V #PWR? U 1 1 61A6AAA5 P 10450 1100 F 0 "#PWR?" H 10450 950 50 0001 C CNN F 1 "+5V" V 10465 1228 50 0000 L CNN F 2 "" H 10450 1100 50 0001 C CNN F 3 "" H 10450 1100 50 0001 C CNN 1 10450 1100 0 1 1 0 $EndComp Wire Wire Line 7500 2650 7900 2650 Wire Wire Line 7050 2650 7150 2650 Wire Wire Line 7900 2650 9050 2650 Connection ~ 7900 2650 Connection ~ 9050 2650 $Comp L Device:Net-Tie_2 NT? U 1 1 61A2AC7B P 6950 2650 F 0 "NT?" H 7050 2600 50 0000 C CNN F 1 "Net-Tie_2" H 6950 2740 50 0001 C CNN F 2 "" H 6950 2650 50 0001 C CNN F 3 "~" H 6950 2650 50 0001 C CNN 1 6950 2650 1 0 0 -1 $EndComp Wire Wire Line 6650 2650 6850 2650 Wire Wire Line 5600 2650 6100 2650 Wire Wire Line 5600 1100 6100 1100 Wire Wire Line 6100 2650 6650 2650 Wire Wire Line 6100 1100 7150 1100 Wire Wire Line 5400 2650 5600 2650 Connection ~ 6650 2650 Connection ~ 6100 2650 Connection ~ 6100 1100 Connection ~ 5600 2650 Connection ~ 5600 1100 Wire Wire Line 6650 1400 6400 1400 $Comp L Device:R R? U 1 1 6189BE5E P 4800 1800 F 0 "R?" H 4870 1846 50 0000 L CNN F 1 "100k" H 4870 1755 50 0000 L CNN F 2 "" V 4730 1800 50 0001 C CNN F 3 "~" H 4800 1800 50 0001 C CNN 1 4800 1800 1 0 0 -1 $EndComp Wire Wire Line 5400 2000 5600 2000 Wire Wire Line 5400 2200 5400 2000 Wire Wire Line 5400 2600 5400 2650 $Comp L Device:Q_NPN_BEC Q? U 1 1 618859C4 P 5300 2400 F 0 "Q?" H 5100 2500 50 0000 L CNN F 1 "BC816B" H 5050 2250 50 0000 L CNN F 2 "" H 5500 2500 50 0001 C CNN F 3 "~" H 5300 2400 50 0001 C CNN 1 5300 2400 1 0 0 -1 $EndComp Wire Wire Line 5600 2550 5600 2650 Wire Wire Line 6100 2550 6100 2650 Wire Wire Line 6650 2550 6650 2650 Wire Wire Line 3500 2650 3500 2150 Wire Wire Line 1850 2150 1850 2650 Wire Wire Line 1850 2650 3500 2650 Connection ~ 3500 2650 Wire Wire Line 3500 2650 4350 2650 Wire Wire Line 4350 2000 4350 2650 Text Label 4350 2650 0 50 ~ 0 POE- Wire Wire Line 10000 2650 10250 2650 Connection ~ 10000 2650 Wire Wire Line 10000 1900 10000 2650 $Comp L power:GND #PWR? U 1 1 614788C1 P 10450 2650 F 0 "#PWR?" H 10450 2400 50 0001 C CNN F 1 "GND" V 10455 2522 50 0000 R CNN F 2 "" H 10450 2650 50 0001 C CNN F 3 "" H 10450 2650 50 0001 C CNN 1 10450 2650 0 -1 -1 0 $EndComp Wire Wire Line 10250 2650 10250 2300 Wire Wire Line 9050 2650 10000 2650 Wire Wire Line 9050 2200 9050 2650 Wire Wire Line 7500 1950 7500 2650 Connection ~ 7500 2650 Wire Wire Line 7900 2100 7900 2650 Wire Wire Line 7150 1950 7150 2650 Connection ~ 7150 2650 Wire Wire Line 7150 2650 7500 2650 Wire Wire Line 10450 2650 10250 2650 Connection ~ 10250 2650 Wire Notes Line 10800 850 10800 2750 Wire Notes Line 4150 2750 4150 1000 Wire Notes Line 6950 2750 6950 1000 Wire Wire Line 3500 1100 3500 1550 Wire Wire Line 1850 1550 1850 1100 $Comp L Device:D_Bridge_+-AA D? U 1 1 61369B64 P 1850 1850 F 0 "D?" V 2000 2000 50 0000 L CNN F 1 "TBD" V 1700 2000 50 0000 L CNN F 2 "" H 1850 1850 50 0001 C CNN F 3 "~" H 1850 1850 50 0001 C CNN 1 1850 1850 0 1 -1 0 $EndComp Wire Wire Line 1850 1100 3500 1100 Wire Wire Line 3500 1100 4350 1100 Connection ~ 3500 1100 $Comp L Device:C C? U 1 1 614360CB P 4350 1850 F 0 "C?" H 4465 1896 50 0000 L CNN F 1 "100n" H 4465 1805 50 0000 L CNN F 2 "" H 4388 1700 50 0001 C CNN F 3 "~" H 4350 1850 50 0001 C CNN 1 4350 1850 1 0 0 -1 $EndComp Wire Wire Line 4350 1700 4350 1100 Connection ~ 4350 1100 Wire Wire Line 4350 1100 4800 1100 $Comp L Device:D_Bridge_+-AA D? U 1 1 612D5611 P 3500 1850 F 0 "D?" V 3700 1950 50 0000 L CNN F 1 "TBD" V 3350 2000 50 0000 L CNN F 2 "" H 3500 1850 50 0001 C CNN F 3 "~" H 3500 1850 50 0001 C CNN 1 3500 1850 0 1 -1 0 $EndComp Text Label 2750 1850 2 50 ~ 0 ISO_CENTER_RX Text Label 2850 1850 0 50 ~ 0 SPARE_A Wire Wire Line 2850 1850 3200 1850 Text Label 4100 1850 2 50 ~ 0 SPARE_B Wire Wire Line 4100 1850 3800 1850 Text Label 4350 1200 0 50 ~ 0 POE+ Text Notes 2550 1100 0 50 ~ 0 Rectifier Text Notes 6250 2500 0 50 ~ 0 POE-CC\nClass 1\n4W PD\n10 mA Text Notes 5650 2200 0 50 ~ 0 POE +\ntyp R Wire Notes Line 5900 2300 5750 1900 Wire Notes Line 6200 2500 6250 2450 Wire Notes Line 6200 2500 6150 2450 Wire Notes Line 6200 2300 6200 2500 Text Notes 9000 1100 0 50 ~ 0 SMPS Wire Wire Line 10250 1500 10250 1100 Text Notes 6100 1100 2 50 ~ 0 POE Identification Text Notes 6200 950 0 50 ~ 10 POE Power Supply Wire Wire Line 10450 1100 10250 1100 Connection ~ 7900 1100 Wire Wire Line 7500 1100 7900 1100 Wire Wire Line 7150 1100 7500 1100 Connection ~ 7150 1100 Wire Wire Line 7150 1100 7150 1650 $Comp L Device:C C? U 1 1 6158FD82 P 7150 1800 F 0 "C?" H 7265 1846 50 0000 L CNN F 1 "1u" H 7250 1750 50 0000 L CNN F 2 "" H 7188 1650 50 0001 C CNN F 3 "~" H 7150 1800 50 0001 C CNN 1 7150 1800 1 0 0 -1 $EndComp Connection ~ 10250 1500 Connection ~ 7900 1700 Wire Wire Line 7900 1700 7900 1800 Wire Wire Line 7900 1700 7900 1550 Wire Wire Line 8700 1700 7900 1700 Wire Wire Line 7900 1100 8200 1100 Wire Wire Line 7900 1250 7900 1100 Wire Wire Line 8200 1100 8600 1100 Connection ~ 8200 1100 Wire Wire Line 8200 1100 8200 1500 Connection ~ 7500 1100 Wire Wire Line 8600 1400 8700 1400 Wire Wire Line 8600 1100 8600 1400 Wire Wire Line 7500 1100 7500 1650 $Comp L Regulator_Switching:LM5017SD U? U 1 1 61457E6E P 9100 1600 F 0 "U?" H 9100 2067 50 0000 C CNN F 1 "LM5018SD" H 9100 1976 50 0000 C CNN F 2 "Package_SON:WSON-8_4x4mm_P0.8mm" H 9150 1150 50 0001 L CIN F 3 "http://www.ti.com/lit/ds/symlink/lm5017.pdf" H 9100 1600 50 0001 C CNN 1 9100 1600 1 0 0 -1 $EndComp $Comp L Device:C C? U 1 1 6145B91B P 9750 1300 F 0 "C?" H 9865 1346 50 0000 L CNN F 1 "10n" H 9865 1255 50 0000 L CNN F 2 "" H 9788 1150 50 0001 C CNN F 3 "~" H 9750 1300 50 0001 C CNN 1 9750 1300 1 0 0 -1 $EndComp Wire Wire Line 9750 1450 9750 1500 Wire Wire Line 9750 1500 9500 1500 Wire Wire Line 9500 1400 9600 1400 Wire Wire Line 9600 1400 9600 1100 $Comp L Device:L L? U 1 1 614653CA P 10000 1500 F 0 "L?" V 10100 1500 50 0000 C CNN F 1 "L" V 9950 1500 50 0000 C CNN F 2 "" H 10000 1500 50 0001 C CNN F 3 "~" H 10000 1500 50 0001 C CNN 1 10000 1500 0 -1 -1 0 $EndComp Wire Wire Line 9850 1500 9750 1500 Connection ~ 9750 1500 $Comp L Device:R R? U 1 1 61468857 P 10250 1750 F 0 "R?" H 10320 1796 50 0000 L CNN F 1 "R" H 10320 1705 50 0000 L CNN F 2 "" V 10180 1750 50 0001 C CNN F 3 "~" H 10250 1750 50 0001 C CNN 1 10250 1750 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 61468FE0 P 10250 2150 F 0 "R?" H 10320 2196 50 0000 L CNN F 1 "R" H 10320 2105 50 0000 L CNN F 2 "" V 10180 2150 50 0001 C CNN F 3 "~" H 10250 2150 50 0001 C CNN 1 10250 2150 1 0 0 -1 $EndComp Wire Wire Line 10250 2000 10250 1950 Wire Wire Line 10250 1600 10250 1500 Wire Wire Line 10250 1500 10150 1500 Wire Wire Line 9000 2100 9000 2200 Wire Wire Line 9000 2200 9050 2200 Wire Wire Line 9100 2200 9100 2100 Connection ~ 9050 2200 Wire Wire Line 9050 2200 9100 2200 $Comp L Device:C C? U 1 1 61479945 P 9750 1900 F 0 "C?" V 9498 1900 50 0000 C CNN F 1 "1u" V 9589 1900 50 0000 C CNN F 2 "" H 9788 1750 50 0001 C CNN F 3 "~" H 9750 1900 50 0001 C CNN 1 9750 1900 0 1 1 0 $EndComp Wire Wire Line 9600 1900 9500 1900 Wire Wire Line 9900 1900 10000 1900 $Comp L Device:R R? U 1 1 61482689 P 8450 1500 F 0 "R?" V 8500 1350 50 0000 C CNN F 1 "R" V 8450 1500 50 0000 C CNN F 2 "" V 8380 1500 50 0001 C CNN F 3 "~" H 8450 1500 50 0001 C CNN 1 8450 1500 0 -1 -1 0 $EndComp Wire Wire Line 8600 1500 8700 1500 Wire Wire Line 8200 1500 8300 1500 $Comp L Device:R R? U 1 1 6149DF5E P 7900 1400 F 0 "R?" H 7970 1446 50 0000 L CNN F 1 "R" H 7970 1355 50 0000 L CNN F 2 "" V 7830 1400 50 0001 C CNN F 3 "~" H 7900 1400 50 0001 C CNN 1 7900 1400 1 0 0 -1 $EndComp $Comp L Device:R R? U 1 1 6149E08E P 7900 1950 F 0 "R?" H 7970 1996 50 0000 L CNN F 1 "R" H 7970 1905 50 0000 L CNN F 2 "" V 7830 1950 50 0001 C CNN F 3 "~" H 7900 1950 50 0001 C CNN 1 7900 1950 1 0 0 -1 $EndComp $Comp L Device:C C? U 1 1 614B991E P 7500 1800 F 0 "C?" H 7615 1846 50 0000 L CNN F 1 "100n" H 7615 1755 50 0000 L CNN F 2 "" H 7538 1650 50 0001 C CNN F 3 "~" H 7500 1800 50 0001 C CNN 1 7500 1800 1 0 0 -1 $EndComp Wire Wire Line 9500 1700 10100 1700 Wire Wire Line 10100 1700 10100 1950 Wire Wire Line 10100 1950 10250 1950 Connection ~ 10250 1950 Wire Wire Line 10250 1950 10250 1900 Wire Wire Line 9750 1100 9750 1150 Wire Wire Line 9600 1100 9750 1100 $Comp L Device:Q_PNP_BEC Q? U 1 1 61356A61 P 6200 1400 F 0 "Q?" H 6391 1354 50 0000 L CNN F 1 "BC806B" H 6391 1445 50 0000 L CNN F 2 "" H 6400 1500 50 0001 C CNN F 3 "~" H 6200 1400 50 0001 C CNN 1 6200 1400 -1 0 0 1 $EndComp Wire Wire Line 6650 1950 6650 2250 $Comp L Device:D_Zener D? U 1 1 6134A7DC P 6650 2400 F 0 "D?" V 6604 2480 50 0000 L CNN F 1 "12V" V 6695 2480 50 0000 L CNN F 2 "" H 6650 2400 50 0001 C CNN F 3 "~" H 6650 2400 50 0001 C CNN 1 6650 2400 0 1 1 0 $EndComp Wire Wire Line 5600 2250 5600 2000 Wire Wire Line 5600 2000 5800 2000 Wire Wire Line 6650 1650 6650 1400 $Comp L Device:R R? U 1 1 61336070 P 6650 1800 F 0 "R?" H 6720 1846 50 0000 L CNN F 1 "100k" H 6720 1755 50 0000 L CNN F 2 "" V 6580 1800 50 0001 C CNN F 3 "~" H 6650 1800 50 0001 C CNN 1 6650 1800 1 0 0 -1 $EndComp $Comp L Device:D_Zener D? U 1 1 61328DE2 P 5600 2400 F 0 "D?" V 5554 2480 50 0000 L CNN F 1 "12V" V 5645 2480 50 0000 L CNN F 2 "" H 5600 2400 50 0001 C CNN F 3 "~" H 5600 2400 50 0001 C CNN 1 5600 2400 0 1 1 0 $EndComp Connection ~ 5600 2000 Wire Wire Line 5600 1950 5600 2000 Wire Wire Line 6100 1600 6100 1800 Wire Wire Line 6100 1200 6100 1100 Wire Wire Line 6100 2200 6100 2250 $Comp L Device:R R? U 1 1 612C6836 P 6100 2400 F 0 "R?" H 5900 2450 50 0000 L CNN F 1 "1.1k" H 5850 2350 50 0000 L CNN F 2 "" V 6030 2400 50 0001 C CNN F 3 "~" H 6100 2400 50 0001 C CNN 1 6100 2400 1 0 0 -1 $EndComp Wire Wire Line 5600 1100 5600 1650 $Comp L Device:R R? U 1 1 612C680D P 5600 1800 F 0 "R?" H 5670 1846 50 0000 L CNN F 1 "22k" H 5670 1755 50 0000 L CNN F 2 "" V 5530 1800 50 0001 C CNN F 3 "~" H 5600 1800 50 0001 C CNN 1 5600 1800 1 0 0 -1 $EndComp Wire Notes Line 10800 850 850 850 Wire Notes Line 10800 1000 850 1000 Wire Notes Line 850 850 850 2750 Wire Wire Line 950 1850 1550 1850 Text Label 950 1850 0 50 ~ 0 ISO_CENTER_TX Wire Notes Line 10800 2750 850 2750 $Comp L Device:C C? U 1 1 61CB2A0D P 1100 5250 F 0 "C?" H 985 5204 50 0000 R CNN F 1 "100n" H 985 5295 50 0000 R CNN F 2 "" H 1138 5100 50 0001 C CNN F 3 "~" H 1100 5250 50 0001 C CNN 1 1100 5250 1 0 0 1 $EndComp Wire Wire Line 1100 5400 1100 5450 Wire Wire Line 1100 5450 1350 5450 Connection ~ 1350 5450 Wire Wire Line 1350 5450 1350 5500 Wire Wire Line 1100 5100 1100 5050 Wire Wire Line 1100 5050 1350 5050 $EndSCHEMATC